Slattery to Perry

Ken Slattery sent the following reply to Michael Perry's reaction to his comments regarding natural law:

"Respectfully to M. Perry -- If you agree that the natural law is the rule for all human conduct, then contraceptive intercourse is wrong.  Why?  Sex is for love and the child, just as eating and drinking are for the preservation of life.  If one acts in such a manner as to negate the biological purpose of these functions, he is acting contrary to his nature.  Similarly, if sexual activity positively frustrates the biological purpose of the act, then such activity is wrong.  Invincible ignorance erases culpability, but contraception is objectively contrary to the natural law and, consequently, a 'no, no.'  By the way, I'm not so sure that I'm a 'good man,'....but I'm trying."